Folding control device and foldable angle-adjustable baby carriage seat frame
Technical Field
The utility model belongs to the perambulator field, concretely relates to folding controlling means, in addition, the utility model discloses still relate to a collapsible angle of adjustment's perambulator seat frame including above-mentioned folding controlling means.
Background
The conventional stroller frame generally includes an upper frame tube, a lower frame tube, and a grab bar, wherein the upper frame tube and the lower frame tube are hinged to each other, and the grab bar is fixedly mounted on the upper frame tube or the lower frame tube. Therefore, only the upper seat frame tube and the lower seat frame tube can be freely rotated, folded and folded, and the grab bar cannot be rotated, folded and folded, so that the packaging volume is still larger, and the storage and the transportation are not facilitated.
In order to solve the above technical problem, prior art (CN103754249B) discloses a foldable stroller seat frame, which includes an upper seat frame tube, a lower seat frame tube, and a grab bar, wherein the upper seat frame tube, the lower seat frame tube, and the grab bar are hinged to each other, and a folding control device is disposed at the hinged position to enable the upper seat frame tube, the lower seat frame tube, and the grab bar to be freely rotated and folded around the hinged position, respectively, and the specific structure of the folding control device is shown in fig. 1. In the prior art, the upper seat frame tube, the lower seat frame tube and the grab bar can be freely rotated, folded and folded mutually, so that the folding is convenient, the volume can be further reduced after the folding, and the storage and the transportation are facilitated. However, the folding control device of the prior art has relatively more details and troublesome assembly operation.
SUMMERY OF THE UTILITY MODEL
Based on the background problem, the utility model aims at providing a folding control device, which has simple structure and convenient assembly, and adopts a double-gear structure to ensure high unfolding strength; another object of the present invention is to provide a foldable and angle-adjustable stroller seat frame comprising the folding control device.
In order to achieve the above purpose, the utility model provides a technical scheme is:
the folding control device comprises a first connecting piece, a second connecting piece and a third connecting piece which are sequentially hinged with each other, wherein a supporting frame is further hinged to one side, away from the second connecting piece, of the third connecting piece, a rotating cam, an unlocking steel wire rope and a first gear are arranged between the second connecting piece and the third connecting piece, a central shaft is arranged on the surface, opposite to the third connecting piece, of the second connecting piece, the rotating cam and the first gear are sleeved on the central shaft, and the first gear abuts against the rotating cam; one end of the unlocking steel wire rope is embedded in the rotating cam, and the other end of the unlocking steel wire rope extends out of the folding control device; and a second gear and a compression spring are arranged between the third connecting piece and the support frame, the second gear is sleeved on the central shaft and is abutted against the first gear, one end of the compression spring is abutted against the second gear, and the other end of the compression spring is abutted against the support frame.
The supporting frame is provided with a first connecting piece, a second connecting piece, a third connecting piece and a supporting frame, wherein one side of the second connecting piece, which is adjacent to the third connecting piece, is provided with a first tooth socket; the folding control device is configured to: in a locking state, the unlocking steel wire rope is in a loose state, the rotating cam is abutted against the spiral inclined plane protrusion of the first tooth groove, one half of the first gear is accommodated in the first tooth groove, the other half of the first gear is accommodated in the second tooth groove, one half of the second gear is accommodated in the third tooth groove, the other half of the second gear is accommodated in the fourth tooth groove, and at the moment, the compression spring is in an opening state; in an unlocking state, the unlocking steel wire rope is pulled to drive the rotating cam to rotate, the rotating cam rotates under the action of the spiral inclined plane protrusion and moves towards the direction of the third connecting piece, the first gear is separated from the first tooth groove and completely enters the second tooth groove, the second gear is separated from the third tooth groove and completely enters the fourth tooth groove, at the moment, the compression spring is in a compression state, and the second connecting piece, the third connecting piece and the supporting frame can rotate mutually.
Preferably, a first arc-shaped limiting column is arranged on the surface, opposite to the second connecting piece, of the first connecting piece, and arc-shaped through grooves for the first arc-shaped limiting column to penetrate through and allowing the first arc-shaped limiting column to slide along are formed in the second connecting piece and the third connecting piece respectively; and a second arc-shaped limiting column is arranged on one side, opposite to the support frame, of the third connecting piece, and an arc-shaped limiting groove used for containing the second arc-shaped limiting column and allowing the second arc-shaped limiting column to slide along the second arc-shaped limiting column is arranged on the support frame.
Wherein, spacing post of first arc and arc logical groove are configured as: when the second connecting piece and the third connecting piece are unfolded to 180 degrees, the first arc-shaped limiting column is just clamped by the arc-shaped through groove in the second connecting piece and the arc-shaped through groove in the third connecting piece, and the first connecting piece is fixed.
Preferably, the radian of the first arc-shaped limiting column is n degrees, a first arc-shaped through groove has been formed in the second connecting piece, a second arc-shaped through groove has been formed in the third connecting piece, the radians of the first arc-shaped through groove and the second arc-shaped through groove are m degrees, and m and n satisfy: m-n is more than or equal to 80.
Preferably, the first arc-shaped limiting column, the first arc-shaped through groove, the second arc-shaped limiting column and the arc-shaped limiting groove are all arranged adjacent to the outer edge of each connecting piece.
Preferably, the outer edges of the second connecting piece and the third connecting piece are provided with limiting bulges for enhancing the connection strength of the second connecting piece and the third connecting piece after expansion.
The invention also provides a foldable angle-adjustable baby carriage seat frame, which comprises an armrest, an upper seat frame tube and a lower seat frame tube which are hinged with each other, wherein the folding control device is arranged at the hinged position of the armrest, the upper seat frame tube and the lower seat frame tube.
The lower end of the armrest is connected with a first connecting piece, the lower end of the upper seat frame pipe is connected with a second connecting piece, the upper end of the lower seat frame pipe is connected with a third connecting piece, and an adjusting piece used for controlling the folding control device to fold or adjust the angle is further arranged on the upper seat frame pipe.
Preferably, the adjusting part comprises a handle connecting part connected to the upper seat frame pipe and a pulling handle hinged to the handle connecting part, and the pulling handle is connected with one end, extending out of the folding control device, of the unlocking steel wire rope so that when the pulling handle is pulled upwards, the unlocking steel wire rope is pulled.
Compared with the prior art, the utility model discloses a folding control device structure is simple relatively, and it is more convenient to assemble, adopts the double gear structure can improve the expansion intensity in addition.
Drawings
FIG. 1 is a schematic view of a folding control device of a foldable stroller seat frame according to the prior art;
fig. 2 is an external view of a folding control device according to embodiment 1 of the present invention;
FIG. 3 is an exploded view of the folding control device of FIG. 2;
FIG. 4 is an exploded view of another angle of the fold control apparatus of FIG. 2;
fig. 5 is a schematic view of the present invention at various folding angles in embodiment 1;
fig. 6 is a schematic structural view of a foldable and angle-adjustable stroller seat frame according to embodiment 2 of the present invention;
fig. 7 is an exploded view of the foldable adjustable angle infant car seat frame of fig. 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The embodiment provides a folding control device, as shown in fig. 2-4, comprising a first connecting member 1-1, a second connecting member 1-2, a third connecting member 1-3 and a support frame 1-4, which are hinged to each other in sequence. As shown in fig. 3 and 4, a first arc-shaped limiting column 101 is arranged on the right side surface of the first connecting piece 1-1, the radian of the first arc-shaped limiting column 101 is 20 °, a first arc-shaped through groove 102 is formed in the second connecting piece 1-2, a second arc-shaped through groove 103 is formed in the third connecting piece 1-3, the radians of the first arc-shaped through groove 102 and the second arc-shaped through groove 103 are both 110 °, and the first arc-shaped limiting column 101 sequentially passes through the first arc-shaped through groove 102 and the second arc-shaped through groove 103 and can move along the first arc-shaped through groove 102 and the second arc-shaped through groove 103; the right side of the third connecting piece 1-3 is provided with a second arc-shaped limiting column 104, the radian of the second arc-shaped limiting column 104 is 15 degrees, the left side of the support frame 1-4 is provided with an arc-shaped limiting groove 105 which is used for accommodating the second arc-shaped limiting column 104 and allowing the second arc-shaped limiting column 104 to move along the arc-shaped limiting groove, and the radian of the arc-shaped limiting groove 105 is 60 degrees. In this embodiment, the first arc-shaped limiting column 101, the first arc-shaped through groove 102, the second arc-shaped through groove 103, the second arc-shaped limiting column 104 and the arc-shaped limiting groove 105 are disposed adjacent to the outer edge of each connecting member. It should be noted that the radians of the first arc-shaped limiting column 101, the first arc-shaped through groove 102, the second arc-shaped through groove 103, the second arc-shaped limiting column 104, and the arc-shaped limiting groove 105 are not limited to the numerical values given in this embodiment 1, the radian of the first arc-shaped limiting column 101 is set to be n degrees, the radians of the first arc-shaped through groove 102 and the second arc-shaped through groove 103 are both m degrees, and m and n satisfy: the m-n is more than or equal to 80, namely the radians of the first arc-shaped through groove 102 and the second arc-shaped through groove 103 can be n +88 degrees, n +89 degrees, n +90 degrees, n +93 degrees and the like. Most importantly, when the second connecting piece 1-2 and the third connecting piece 1-3 are in a 180-degree state, the first arc-shaped limiting column 101 on the first connecting piece 1-1 is clamped by the first arc-shaped through groove 102 on the second connecting piece 1-2 and the second arc-shaped through groove 103 on the third connecting piece 1-3, so that the first connecting piece 1-1 cannot rotate; when the foldable device is to be folded, the first arc-shaped through groove 102 on the second connecting piece 1-2 and the second arc-shaped through groove 103 on the third connecting piece 1-3 are enough to allow the first arc-shaped limiting column 101 to slide on the arc-shaped through groove by approximately 90 degrees. The radian of the second arc-shaped limiting column 104 and the arc-shaped limiting groove 105 on the support frames 1-4 depends on the angle of each connecting piece during assembly and the angle required to rotate during folding.
Specifically, as shown in fig. 3 and 4, a first tooth groove is formed in the right side of the second connecting member 1-2, a spiral inclined plane protrusion is arranged in the first tooth groove, a second tooth groove is formed in the left side of the third connecting member 1-3, a third tooth groove is formed in the right side of the third connecting member, the second tooth groove is communicated with the third tooth groove, and a fourth tooth groove is formed in the left side of the support frame 1-4. A rotating cam 110, an unlocking steel wire rope 111 and a first gear 112 are arranged between the second connecting piece 1-2 and the third connecting piece 1-3, a central shaft 113 is arranged on the right side surface of the second connecting piece 1-2, the rotating cam 110 and the first gear 112 are both sleeved on the central shaft 113, three spiral inclined planes on the left side of the rotating cam 110 abut against spiral inclined plane protrusions on the bottom surface of the first tooth groove, and the first gear 112 abuts against the rotating cam 110; one end of the unlocking steel wire rope 111 is embedded in the embedding hole on the rotating cam 110, and the other end of the unlocking steel wire rope extends out of the folding control device from the second connecting piece 1-2 along the groove on the edge of the rotating cam 110; a second gear 121 and a compression spring 122 are further arranged between the third connecting piece 1-3 and the support frame 1-4, the second gear 121 is sleeved on the central shaft 113 and abuts against the right side of the first gear 112, the left end of the compression spring 122 abuts against a spring groove on the right side of the second gear 121, and the right end of the compression spring abuts against a fourth tooth groove of the support frame 1-4.
Wherein the folding control device is configured to: in a locked state, the unlocking steel wire rope 111 is in a relaxed state, the rotating cam 110 abuts against a spiral inclined plane protrusion of the first tooth groove, half of the first gear 112 is accommodated in one tooth groove, the other half of the first gear is accommodated in the second tooth groove, half of the second gear 121 is accommodated in the third tooth groove, the other half of the second gear is accommodated in the fourth tooth groove, and the compression spring 122 is in an open state; in an unlocking state, the unlocking steel wire rope 111 is pulled to drive the rotating cam 110 to rotate, the rotating cam 110 rotates under the action of the spiral inclined plane and moves towards the direction of the third connecting piece 1-3, the first gear 112 is pushed to be separated from the first tooth groove and completely enter the second tooth groove, the second gear 121 is separated from the third tooth groove and completely enters the fourth tooth groove, the compression spring 122 is in a compression state, and at the moment, the second connecting piece 1-2, the third connecting piece 1-3 and the support frame 1-4 can rotate mutually. When the second connecting piece 1-2 and the third connecting piece 1-3 are unfolded to 180 degrees, the first arc-shaped limiting column 101 is just clamped by the first arc-shaped through groove 102 on the second connecting piece 1-2 and the second arc-shaped through groove 103 on the third connecting piece 1-3, and at the moment, the first connecting piece 1-1 is fixed. In order to realize the functions, the positions of the first arc-shaped through groove 102 and the second arc-shaped through groove 103 are staggered, when the second connecting piece 1-2 and the third connecting piece 1-3 are unfolded to 180 degrees, a small part of the first arc-shaped through groove 102 and the second arc-shaped through groove 103 are overlapped, and the overlapped radian is just the radian of the first arc-shaped limiting column 101, so that when the second connecting piece 1-2 and the third connecting piece 1-3 are in a 180-degree state, the first arc-shaped limiting column 101 is clamped by the first arc-shaped through groove 102 and the second arc-shaped through groove 103. When the second connecting piece 1-2 and the third connecting piece 1-3 are unfolded to 180 degrees, in order to improve the strength after the unfolding, a first limiting bulge 131 is arranged on the right surface of the second connecting piece 1-2, a second limiting bulge 132 is arranged on the left surface of the third connecting piece 1-4, and the first limiting bulge 131 and the second limiting bulge 132 are both arranged close to the outer edge.
Under the unlocking state, the folding control device can enter an angle adjusting state and a folding state.
When the angle is adjusted, the second connecting piece 1-2 and the third connecting piece 1-3 are kept at 180 degrees, and the relative positions of the first connecting piece 1-1, the second connecting piece 1-2 and the third connecting piece 1-3 are kept unchanged, as shown in fig. 5(a) (b) (c), fig. 5(a) is a first angle position of the folding control device, fig. 5(b) is a second angle position of the folding control device, and fig. 5(c) is a third angle position of the folding control device; when the folding control device starts to fold and fold at the third angular position in fig. 5(c), the second arc-shaped limiting post 104 on the third connecting member 1-3 slides to the extreme position in the arc-shaped limiting groove 105 on the supporting frame 1-4, the position of the third connecting member 1-3 relative to the supporting frame 1-4 is not changed, the second connecting member 1-2 rotates relative to the third connecting member 1-3, at this time, the first arc-shaped limiting post 101 on the first connecting member 1-1 is no longer clamped by the first arc-shaped through groove 102 on the second connecting member 1-2 and the second arc-shaped through groove 103 on the third connecting member 1-3, the first connecting member 1-1 can rotate along with the second connecting member 1-2, as shown in fig. 5(d) (e), fig. 5(d) is a half-folding and folding state diagram of the folding control device, fig. 5(e) is a view showing the folding control device after completion of folding.
The folding control device of the embodiment can be applied to adjusting the angles of three rod pieces hinged with each other and folding, and when the folding control device is used, the three rod pieces are correspondingly connected with the first connecting piece 1-1, the second connecting piece 1-2 and the third connecting piece 1-3. When the device is used, the unlocking steel wire rope 111 is pulled to drive the rotating cam 110 to rotate, the rotating cam 110 rotates under the action of the spiral inclined plane and moves towards the direction of the third connecting piece 1-3, the first gear 112 is pushed to be separated from the first tooth space and completely enter the second tooth space, the second gear 121 is separated from the third tooth space and completely enters the fourth tooth space, the compression spring 122 is in a compression state, and at the moment, the first connecting piece 1-1, the second connecting piece 1-2 and the third connecting piece 1-3 can be rotated for adjustment; after the adjustment is finished, the unlocking steel wire rope 111 is loosened, and under the resilience force of the compression spring 122, the second gear 121 and the first gear 112 return to the initial state, that is, half of the first gear 112 is accommodated in the first tooth groove of the second connecting member 1-2, the other half of the first gear is accommodated in the second tooth groove of the third connecting member 1-3, half of the second gear 121 is accommodated in the third tooth groove of the third connecting member 1-3, the other half of the second gear is accommodated in the fourth tooth groove of the support frame 1-4, and the compression spring 122 is in an open state, and at this time, the first connecting member 1-1, the second connecting member 1-2 and the third connecting member 1-3 are locked and cannot rotate.
Example 2
The present embodiment provides a foldable and angle-adjustable stroller frame, as shown in fig. 6 and 7, comprising an armrest 1, an upper seat frame tube 2 and a lower seat frame tube 3, which are hinged to each other, wherein the folding control device of embodiment 1 is disposed at the hinged position of the armrest 1, the upper seat frame tube 2 and the lower seat frame tube 3. The lower end of the armrest 1 is connected with a first connecting piece 1-1, the lower end of the upper seat frame tube 2 is connected with a second connecting piece 1-2, the upper end of the lower seat frame tube 3 is connected with a third connecting piece 1-3, and the upper seat frame tube 2 is further provided with an adjusting piece for controlling the folding control device to fold or adjust the angle. In order to enhance the connection strength of the upper seat frame tube 2 and the lower seat frame tube 3 after being unfolded, the outer edges of the second connecting piece 1-2 and the third connecting piece 1-3 are respectively provided with a limiting bulge.
In this embodiment, the adjusting member includes a handle connecting member 201 connected to the upper seat frame tube 2, and a pulling handle 202 hinged to the handle connecting member 201, the handle connecting member 201 is riveted to the upper end of the upper seat frame tube 2, the pulling handle 202 is hinged to the handle connecting member 201 through an axis nail, and the pulling handle 202 is connected to one end of the unlocking steel wire rope 111 extending out of the folding control device, so that when the pulling handle 202 is pulled upward, the unlocking steel wire rope 111 is pulled.
In the embodiment, when the folding chair is used, the pulling handle 202 is operated upwards, so that the unlocking steel wire rope 111 is pulled, the unlocking steel wire rope 111 is pulled to drive the rotating cam 110 to rotate, the rotating cam 110 rotates under the action of the spiral inclined plane and moves towards the direction of the third connecting piece 1-3, the first gear 112 is pushed to be separated from the first tooth space and completely enter the second tooth space, the second gear 121 is separated from the third tooth space and completely enter the fourth tooth space, and the compression spring 122 is in a compression state, so that the upper chair pipe frame 2, the lower chair pipe frame 3 and the armrest 1 can be rotated to fold and adjust the angle; after the adjustment is completed, the pulling handle 202 is released, and under the resilience force of the compression spring 122, the second gear 121 and the first gear 112 return to the initial state, that is, half of the first gear 112 is accommodated in the first tooth groove of the second connecting member 1-2, the other half of the first gear 112 is accommodated in the second tooth groove of the third connecting member 1-3, half of the second gear 121 is accommodated in the third tooth groove of the third connecting member 1-3, the other half of the second gear is accommodated in the fourth tooth groove of the support frame 1-4, and the compression spring 122 is in the open state, at this time, the upper seat pipe frame 2, the lower seat pipe frame 3, and the armrest 1 are locked and cannot rotate. When the upper seat frame tube 2 and the lower seat frame tube 3 are unfolded to 180 degrees, the first arc-shaped limiting column 101 is just clamped by the first arc-shaped through groove 102 and the second arc-shaped through groove 103, and the armrest 1 is fixed.
It should be noted that, for those skilled in the art, without departing from the inventive concept, several variations and modifications can be made, which are within the scope of the present invention.